Home / 121,985.61-168,357.81-70,292.63

Finding the Fourth Proportional to 121,985.61, 168,357.81 and 70,292.63

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Solution

The fourth proportional to 121,985.61, 168,357.81 and 70,292.63 is: 97,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,985.61 : 168,357.81 = 70,292.63 : x
  2. Step 2: Convert to fraction form
    121,985.61/168,357.81 = 70,292.63/x
  3. Step 3: Cross multiply
    121,985.61x = 168,357.81 × 70,292.63
  4. Step 4: Simplify right side
    121,985.61x = 11,834,312,404.15
  5. Step 5: Solve for x
    x = 11,834,312,404.15/121,985.61
  6. Step 6: Final answer
    x = 97,014.00

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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.