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Finding the Fourth Proportional to 124,547.98, 171,880 and 70,840.72

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Solution

The fourth proportional to 124,547.98, 171,880 and 70,840.72 is: 97,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,547.98 : 171,880 = 70,840.72 : x
  2. Step 2: Convert to fraction form
    124,547.98/171,880 = 70,840.72/x
  3. Step 3: Cross multiply
    124,547.98x = 171,880 × 70,840.72
  4. Step 4: Simplify right side
    124,547.98x = 12,176,102,953.60
  5. Step 5: Solve for x
    x = 12,176,102,953.60/124,547.98
  6. Step 6: Final answer
    x = 97,762.35

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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.