Home / 98,866.36-136,428.06-56,419.12

Finding the Fourth Proportional to 98,866.36, 136,428.06 and 56,419.12

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Solution

The fourth proportional to 98,866.36, 136,428.06 and 56,419.12 is: 77,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,866.36 : 136,428.06 = 56,419.12 : x
  2. Step 2: Convert to fraction form
    98,866.36/136,428.06 = 56,419.12/x
  3. Step 3: Cross multiply
    98,866.36x = 136,428.06 × 56,419.12
  4. Step 4: Simplify right side
    98,866.36x = 7,697,151,088.51
  5. Step 5: Solve for x
    x = 7,697,151,088.51/98,866.36
  6. Step 6: Final answer
    x = 77,854.10

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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.