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Finding the Fourth Proportional to 143,607.60, 215,411.40 and 64,875.60

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Solution

The fourth proportional to 143,607.60, 215,411.40 and 64,875.60 is: 97,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,607.60 : 215,411.40 = 64,875.60 : x
  2. Step 2: Convert to fraction form
    143,607.60/215,411.40 = 64,875.60/x
  3. Step 3: Cross multiply
    143,607.60x = 215,411.40 × 64,875.60
  4. Step 4: Simplify right side
    143,607.60x = 13,974,943,821.84
  5. Step 5: Solve for x
    x = 13,974,943,821.84/143,607.60
  6. Step 6: Final answer
    x = 97,313.40

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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.