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Finding the Fourth Proportional to 144,363.36, 216,545.04 and 70,428

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Solution

The fourth proportional to 144,363.36, 216,545.04 and 70,428 is: 105,642.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,363.36 : 216,545.04 = 70,428 : x
  2. Step 2: Convert to fraction form
    144,363.36/216,545.04 = 70,428/x
  3. Step 3: Cross multiply
    144,363.36x = 216,545.04 × 70,428
  4. Step 4: Simplify right side
    144,363.36x = 15,250,834,077.12
  5. Step 5: Solve for x
    x = 15,250,834,077.12/144,363.36
  6. Step 6: Final answer
    x = 105,642.00

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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.