Home / 105,528,021.40-158,292,032.10-87,612,117.40

Finding the Fourth Proportional to 105,528,021.40, 158,292,032.10 and 87,612,117.40

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Solution

The fourth proportional to 105,528,021.40, 158,292,032.10 and 87,612,117.40 is: 131,418,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,528,021.40 : 158,292,032.10 = 87,612,117.40 : x
  2. Step 2: Convert to fraction form
    105,528,021.40/158,292,032.10 = 87,612,117.40/x
  3. Step 3: Cross multiply
    105,528,021.40x = 158,292,032.10 × 87,612,117.40
  4. Step 4: Simplify right side
    105,528,021.40x = 13,868,300,099,829,768
  5. Step 5: Solve for x
    x = 13,868,300,099,829,768/105,528,021.40
  6. Step 6: Final answer
    x = 131,418,176.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.