Home / 145,120,552.40-200,258,802.12-90,115,228.88

Finding the Fourth Proportional to 145,120,552.40, 200,258,802.12 and 90,115,228.88

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Solution

The fourth proportional to 145,120,552.40, 200,258,802.12 and 90,115,228.88 is: 124,354,321.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,120,552.40 : 200,258,802.12 = 90,115,228.88 : x
  2. Step 2: Convert to fraction form
    145,120,552.40/200,258,802.12 = 90,115,228.88/x
  3. Step 3: Cross multiply
    145,120,552.40x = 200,258,802.12 × 90,115,228.88
  4. Step 4: Simplify right side
    145,120,552.40x = 18,046,367,788,278,428
  5. Step 5: Solve for x
    x = 18,046,367,788,278,428/145,120,552.40
  6. Step 6: Final answer
    x = 124,354,321.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.